First reported at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=951177 but figured this was a better place. Since switching to 5.4.13 from 5.3.15 (IIRC, though I may have been on 5.4.8), my laptop sees lots of issues with wilwifi regularly when transmitting a bunch of wireguard traffic. I've seen the following nullptr deref a few times: Feb 12 13:55:39 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Error sending STATISTICS_CMD: time out after 2000ms. Feb 12 13:55:39 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Current CMD queue read_ptr 223 write_ptr 224 Feb 12 13:55:41 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: HW error, resetting before reading Feb 12 13:55:41 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Microcode SW error detected. Restarting 0xA5A505A2. Feb 12 13:55:41 BMXPSv3 kernel: BUG: kernel NULL pointer dereference, address: 0000000000000008 Feb 12 13:55:41 BMXPSv3 kernel: #PF: supervisor read access in kernel mode Feb 12 13:55:41 BMXPSv3 kernel: #PF: error_code(0x0000) - not-present page Feb 12 13:55:41 BMXPSv3 kernel: PGD 0 P4D 0 Feb 12 13:55:41 BMXPSv3 kernel: Oops: 0000 [#1] SMP PTI Feb 12 13:55:41 BMXPSv3 kernel: CPU: 0 PID: 588 Comm: irq/158-iwlwifi Tainted: G OE 5.4.0-3-amd64 #1 Debian 5.4.13-1 Feb 12 13:55:41 BMXPSv3 kernel: Hardware name: Dell Inc. Precision 5530/0W8N6V, BIOS 1.8.1 02/01/2019 Feb 12 13:55:42 BMXPSv3 kernel: RIP: 0010:iwl_pcie_irq_msix_handler+0x12f/0x370 [iwlwifi] Feb 12 13:55:42 BMXPSv3 kernel: Code: 00 41 f6 c6 01 0f 85 a4 00 00 00 48 8b 45 10 44 89 f2 83 e2 02 83 78 10 13 0f 84 2d 01 00 00 85 d2 74 37 48 8b 83 38 72 00 00 <8b> 40 08 3d d3 00 00 00 0f 84 06 02 00 00 3d d0 00 00 00 0f 84 fb Feb 12 13:55:42 BMXPSv3 kernel: RSP: 0018:ffffb12300d3be60 EFLAGS: 00010202 Feb 12 13:55:42 BMXPSv3 kernel: RAX: 0000000000000000 RBX: ffff8c84dace0318 RCX: 0000000000000000 Feb 12 13:55:42 BMXPSv3 kernel: RDX: 0000000000000002 RSI: 0000000000000246 RDI: 0000000000000246 Feb 12 13:55:42 BMXPSv3 kernel: RBP: ffff8c84dace0018 R08: ffff8c84dace8fa8 R09: ffffb12300d3bdf8 Feb 12 13:55:42 BMXPSv3 kernel: R10: ffffb12300d3bb50 R11: 0000000000000000 R12: 00000000a5a505a2 Feb 12 13:55:42 BMXPSv3 kernel: R13: ffff8c84dace907c R14: 0000000024000182 R15: ffff8c84dace7ea4 Feb 12 13:55:42 BMXPSv3 kernel: FS: 0000000000000000(0000) GS:ffff8c84ec000000(0000) knlGS:0000000000000000 Feb 12 13:55:42 BMXPSv3 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 12 13:55:42 BMXPSv3 kernel: CR2: 0000000000000008 CR3: 000000012ba0a003 CR4: 00000000003606f0 Feb 12 13:55:42 BMXPSv3 kernel: Call Trace: Feb 12 13:55:42 BMXPSv3 kernel: ? irq_finalize_oneshot.part.0+0x100/0x100 Feb 12 13:55:42 BMXPSv3 kernel: irq_thread_fn+0x20/0x60 Feb 12 13:55:42 BMXPSv3 kernel: irq_thread+0xdc/0x170 Feb 12 13:55:42 BMXPSv3 kernel: ? irq_forced_thread_fn+0x80/0x80 Feb 12 13:55:42 BMXPSv3 kernel: kthread+0xf9/0x130 Feb 12 13:55:42 BMXPSv3 kernel: ? irq_thread_check_affinity+0xd0/0xd0 Feb 12 13:55:42 BMXPSv3 kernel: ? kthread_park+0x90/0x90 Feb 12 13:55:42 BMXPSv3 kernel: ret_from_fork+0x35/0x40 Feb 12 13:55:42 BMXPSv3 kernel: Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_seq_device sctp ipheth veth typec_displayport ccm ip6t_REJECT nf_reject_ipv6 sch_fq_codel sch_htb ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_MASQUERADE xt_nat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 crc32c_generic nft_counter xt_mark xt_owner nft_compat bridge stp llc wireguard(OE) ip6_udp_tunnel udp_tunnel wacom usbhid hid_multitouch hid_generic snd_sof_pci snd_sof_intel_hda_common snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_soc_skl nf_tables snd_hda_codec_hdmi snd_soc_hdac_hda nfnetlink snd_hda_ext_core rtsx_pci_sdmmc mei_wdt snd_soc_sst_ipc iTCO_wdt iTCO_vendor_support dell_rbtn i2c_designware_platform snd_hda_codec_realtek rtsx_pci_ms snd_soc_sst_dsp snd_soc_acpi_intel_match i2c_designware_core watchdog mmc_core memstick snd_hda_codec_generic snd_soc_acpi intel_rapl_msr x86_pkg_temp_thermal intel_powerclamp coretemp snd_soc_core dell_laptop dell_wmi Feb 12 13:55:42 BMXPSv3 kernel: ledtrig_audio kvm_intel snd_compress dell_smbios iwlmvm snd_hda_intel wmi_bmof intel_wmi_thunderbolt kvm mac80211 snd_intel_nhlt mxm_wmi btusb btrtl btbcm btintel tpm_crb irqbypass dell_wmi_descriptor libarc4 snd_hda_codec dcdbas bluetooth dell_smm_hwmon snd_hda_core crct10dif_pclmul snd_hwdep crc32_pclmul iwlwifi snd_pcm uvcvideo drbg videobuf2_vmalloc snd_timer videobuf2_memops ahci videobuf2_v4l2 efi_pstore ghash_clmulni_intel ansi_cprng snd intel_cstate ecdh_generic libahci videobuf2_common intel_uncore intel_lpss_pci cfg80211 joydev pcspkr efivars i2c_i801 soundcore mei_me intel_rapl_perf ecc intel_lpss idma64 rtsx_pci libata rfkill cdc_acm videodev mei ucsi_acpi mfd_core crc16 processor_thermal_device mc typec_ucsi i2c_hid intel_rapl_common intel_pch_thermal intel_soc_dts_iosf typec hid battery tpm_tis tpm_tis_core int3403_thermal int340x_thermal_zone dell_smo8800 tpm wmi intel_hid rng_core acpi_pad sparse_keymap ac int3400_thermal button acpi_thermal_rel efivarfs Feb 12 13:55:42 BMXPSv3 kernel: ip_tables x_tables autofs4 btrfs libcrc32c xor zstd_decompress zstd_compress raid6_pq ctr dm_crypt dm_mod algif_skcipher af_alg sd_mod usb_storage scsi_mod i915 crc32c_intel i2c_algo_bit drm_kms_helper xhci_pci xhci_hcd nvme drm aesni_intel usbcore psmouse glue_helper crypto_simd cryptd evdev nvme_core serio_raw usb_common video [last unloaded: acpi_call] Feb 12 13:55:42 BMXPSv3 kernel: CR2: 0000000000000008 Feb 12 13:55:42 BMXPSv3 kernel: ---[ end trace e4c76f655a7083a1 ]--- as well as hangs regularly like: Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Queue 10 is inactive on fifo 2 and stuck for 10000 ms. SW [210, 174] HW [162, 162] FH TRB=0x0a5a5a5a2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Hardware error detected. Restarting. Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: HW error, resetting before reading Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Start IWL Error Log Dump: Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Status: 0x00000040, count: -507577611 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Loaded firmware version: 46.a41adfe7.0 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x87B35882 | ADVANCED_SYSASSERT Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x3A746FE3 | trm_hw_status0 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x0F6832E3 | trm_hw_status1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xFEBC9E3F | branchlink2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x36D18045 | interruptlink1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xB59EB707 | interruptlink2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x99CA923B | data1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xBB6715CD | data2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x40802F60 | data3 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x51BBDEF6 | beacon time Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x1B00F6D4 | tsf low Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x61357AFF | tsf hi Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xC61D87FB | time gp1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA97AC55B | time gp2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x50929CF9 | uCode revision type Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x757CEB5E | uCode version major Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xC8419542 | uCode version minor Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xE3A777F7 | hw version Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x0C047A38 | board version Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x869678C7 | hcmd Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xE755B9DA | isr0 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xB32D57DE | isr1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x7B1FC4FB | isr2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xBE16425F | isr3 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xDFFE2A35 | isr4 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA38E1736 | last cmd Id Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xF8B0957A | wait_event Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x15AA188C | l2p_control Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xDECF3EF5 | l2p_duration Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xFB941368 | l2p_mhvalid Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x55FEB6A6 | l2p_addr_match Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xED461673 | lmpm_pmg_sel Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xF82E5779 | timestamp Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x51510013 | flow_handler Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Start IWL Error Log Dump: Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Status: 0x00000040, count: 1487817107 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xCBF574B3 | ADVANCED_SYSASSERT Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xE35C7AA3 | umac branchlink1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xC53A411D | umac branchlink2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xD6AFD273 | umac interruptlink1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA351EE30 | umac interruptlink2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5EB8FB4 | umac data1 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x460A2DBD | umac data2 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xFBB42017 | umac data3 Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xFF83A4CB | umac major Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xE8C5AAAB | umac minor Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x4DD67A3D | frame pointer Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xF0ABBF98 | stack pointer Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xC48CD80C | last host cmd Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0x94ABACD9 | isr status reg Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Fseq Registers: Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_ERROR_CODE Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_TOP_INIT_VERSION Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_CNVIO_INIT_VERSION Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_OTP_VERSION Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_TOP_CONTENT_VERSION Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_ALIVE_TOKEN Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_CNVI_ID Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | FSEQ_CNVR_ID Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | CNVI_AUX_MISC_CHIP Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | CNVR_AUX_MISC_CHIP Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: 0xA5A5A5A2 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR Feb 12 14:06:43 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Collecting data: trigger 2 fired. Feb 12 14:06:43 BMXPSv3 kernel: ieee80211 phy0: Hardware restart was requested Feb 12 14:06:45 BMXPSv3 kernel: perf: interrupt took too long (2747 > 2500), lowering kernel.perf_event_max_sample_rate to 72750 Feb 12 14:07:04 BMXPSv3 kernel: rcu: INFO: rcu_sched detected stalls on CPUs/tasks: Feb 12 14:07:04 BMXPSv3 kernel: rcu: 10-....: (6 ticks this GP) idle=61a/1/0x4000000000000000 softirq=21140/21140 fqs=2390 Feb 12 14:07:04 BMXPSv3 kernel: (detected by 2, t=5252 jiffies, g=23373, q=33290) Feb 12 14:07:04 BMXPSv3 kernel: Sending NMI from CPU 2 to CPUs 10: Feb 12 14:07:04 BMXPSv3 kernel: NMI backtrace for cpu 10 Feb 12 14:07:04 BMXPSv3 kernel: CPU: 10 PID: 621 Comm: kworker/10:2 Tainted: G OE 5.4.0-3-amd64 #1 Debian 5.4.13-1 Feb 12 14:07:04 BMXPSv3 kernel: Hardware name: Dell Inc. Precision 5530/0W8N6V, BIOS 1.8.1 02/01/2019 Feb 12 14:07:04 BMXPSv3 kernel: Workqueue: events iwl_fw_error_dump_wk [iwlwifi] Feb 12 14:07:04 BMXPSv3 kernel: RIP: 0010:iwl_trans_pcie_read32+0x10/0x20 [iwlwifi] Feb 12 14:07:04 BMXPSv3 kernel: Code: f6 48 03 b7 78 8f 00 00 89 16 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 89 f6 48 03 b7 78 8f 00 00 8b 06 <c3> 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 48 Feb 12 14:07:04 BMXPSv3 kernel: RSP: 0018:ffffb2c8c08cbd58 EFLAGS: 00000082 Feb 12 14:07:04 BMXPSv3 kernel: RAX: 00000000a5a5a5a2 RBX: ffffb2c8c3ecd7a9 RCX: 0000000000000011 Feb 12 14:07:04 BMXPSv3 kernel: RDX: 0000000000400000 RSI: ffffb2c8c09dc41c RDI: ffff8b251bb10018 Feb 12 14:07:04 BMXPSv3 kernel: RBP: ffff8b251bb10018 R08: 0000000000003a98 R09: 0000000000000011 Feb 12 14:07:04 BMXPSv3 kernel: R10: 0000000000000000 R11: 00000000000001bf R12: ffffb2c8c3f40169 Feb 12 14:07:04 BMXPSv3 kernel: R13: 0000000000400000 R14: 0000000000000006 R15: ffff8b2517cb2ca8 Feb 12 14:07:04 BMXPSv3 kernel: FS: 0000000000000000(0000) GS:ffff8b252c280000(0000) knlGS:0000000000000000 Feb 12 14:07:04 BMXPSv3 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 12 14:07:04 BMXPSv3 kernel: CR2: 00007fcd1e9df000 CR3: 0000000126e0a005 CR4: 00000000003606e0 Feb 12 14:07:04 BMXPSv3 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Feb 12 14:07:04 BMXPSv3 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Feb 12 14:07:04 BMXPSv3 kernel: Call Trace: Feb 12 14:07:04 BMXPSv3 kernel: iwl_trans_pcie_read_mem+0x71/0xc0 [iwlwifi] Feb 12 14:07:04 BMXPSv3 kernel: iwl_fw_dump_mem.isra.0.part.0+0x42/0x60 [iwlwifi] Feb 12 14:07:04 BMXPSv3 kernel: iwl_fw_dbg_collect_sync+0x592/0x1970 [iwlwifi] Feb 12 14:07:04 BMXPSv3 kernel: ? __switch_to+0x80/0x3e0 Feb 12 14:07:04 BMXPSv3 kernel: iwl_fw_error_dump_wk+0x53/0x80 [iwlwifi] Feb 12 14:07:04 BMXPSv3 kernel: process_one_work+0x1b4/0x370 Feb 12 14:07:04 BMXPSv3 kernel: worker_thread+0x50/0x3c0 Feb 12 14:07:04 BMXPSv3 kernel: kthread+0xf9/0x130 Feb 12 14:07:04 BMXPSv3 kernel: ? process_one_work+0x370/0x370 Feb 12 14:07:04 BMXPSv3 kernel: ? kthread_park+0x90/0x90 Feb 12 14:07:04 BMXPSv3 kernel: ret_from_fork+0x35/0x40 Feb 12 14:07:06 BMXPSv3 kernel: rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 10-... } 5455 jiffies s: 6409 root: 0x400/. Feb 12 14:07:06 BMXPSv3 kernel: rcu: blocking rcu_node structures: Feb 12 14:07:06 BMXPSv3 kernel: Task dump for CPU 10: Feb 12 14:07:06 BMXPSv3 kernel: kworker/10:2 R running task 0 621 2 0x80004008 Feb 12 14:07:06 BMXPSv3 kernel: Workqueue: events iwl_fw_error_dump_wk [iwlwifi] Feb 12 14:07:06 BMXPSv3 kernel: Call Trace: Feb 12 14:07:06 BMXPSv3 kernel: ? iwl_fw_error_dump_wk+0x53/0x80 [iwlwifi] Feb 12 14:07:06 BMXPSv3 kernel: ? process_one_work+0x1b4/0x370 Feb 12 14:07:06 BMXPSv3 kernel: ? worker_thread+0x50/0x3c0 Feb 12 14:07:06 BMXPSv3 kernel: ? kthread+0xf9/0x130 Feb 12 14:07:06 BMXPSv3 kernel: ? process_one_work+0x370/0x370 Feb 12 14:07:06 BMXPSv3 kernel: ? kthread_park+0x90/0x90 Feb 12 14:07:06 BMXPSv3 kernel: ? ret_from_fork+0x35/0x40 Feb 12 14:07:12 BMXPSv3 kernel: clocksource: timekeeping watchdog on CPU10: Marking clocksource 'tsc' as unstable because the skew is too large: Feb 12 14:07:12 BMXPSv3 kernel: clocksource: 'acpi_pm' wd_now: 9c314c wd_last: 9fb334 mask: ffffff Feb 12 14:07:12 BMXPSv3 kernel: clocksource: 'tsc' cs_now: d3ee912c6c cs_last: c52cc1a951 mask: ffffffffffffffff Feb 12 14:07:12 BMXPSv3 kernel: tsc: Marking TSC unstable due to clocksource watchdog Feb 12 14:07:13 BMXPSv3 kernel: TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'. Feb 12 14:07:13 BMXPSv3 kernel: sched_clock: Marking unstable (214600819047, -104627019)<-(214537658814, -22448794) Feb 12 14:07:13 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Failing on timeout while stopping DMA channel 8 [0xa5a5a5a2] Feb 12 14:07:13 BMXPSv3 kernel: clocksource: Switched to clocksource acpi_pm Feb 12 14:07:13 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Applying debug destination EXTERNAL_DRAM Feb 12 14:07:13 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: Applying debug destination EXTERNAL_DRAM Feb 12 14:07:13 BMXPSv3 kernel: iwlwifi 0000:3b:00.0: FW already configured (0) - re-configuring
